જો $\log 2 = 0.30103$ અને $\log 3 = 0.4771$ હોય,તો $(648)^{5}$ માં અંકોની સંખ્યા કેટલી થાય?

  • A
    $12$
  • B
    $13$
  • C
    $14$
  • D
    $15$

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જો $\frac{\log x}{b-c} = \frac{\log y}{c-a} = \frac{\log z}{a-b}$ હોય,તો $xyz = x^a \cdot y^b \cdot z^c = x^{b+c} \cdot y^{c+a} \cdot z^{a+b} = $

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